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Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) Given the following thermochemical equations: C2H2(g) + (5/2)02(g) ---> 2CO2(g) + H2O(l) C(s) + O2(g)---> CO2(g) H2(g) + (1/2)02(g) ---> H2O(l) AH° = ??? KJ AH-1299.5 kJ AH-393.5 kJ AH-285.8 kJ

Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) Given the following thermochemical equations: C2H2(g) + (5/2)02(g) ---> 2CO2(g) + H2O(l) C(s) + O2(g)---> CO2(g) H2(g) + (1/2)02(g) ---> H2O(l) AH° = ??? KJ AH-1299.5 kJ AH-393.5 kJ AH-285.8 kJ

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) Given the following thermochemical equations: C2H2(g) + (5/2)02(g) ---> 2CO2(g) + H2O(l) C(s) + O2(g)---> CO2(g) H2(g) + (1/2)02(g) ---> H2O(l) • +226 kJ -787 kJ . -226 KJ • +1572 kJ • K2NO2 • KNO3 Which is the correct formula for the compound whose percent composition is shown? K-38.62% O- 47.51% N-13.87% • KNO2 • K4N1003 How many mL of 3.0 M HCI are needed to make 300.0 mL of 0.1 M HCI? 100.0 mL 10.0 mL • 30.0 mL .9.0 mL What group has the highest electronegativity? . Poor Metals • Moderately active non-metals • Metalloids . Highly active non-metals. A conversion factor • is equal to one. • is a ratio of equivalent measurements. • does not change the value of the measurement. all of the above. How many electrons can fit on the second energy level? • Two AH = ??? kJ • Eighteen . Eight • Thirty-Two AH-1299.5 kJ AH-393.5 kJ AH = -285.8 kJ
Transcribed Image Text:Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) Given the following thermochemical equations: C2H2(g) + (5/2)02(g) ---> 2CO2(g) + H2O(l) C(s) + O2(g)---> CO2(g) H2(g) + (1/2)02(g) ---> H2O(l) • +226 kJ -787 kJ . -226 KJ • +1572 kJ • K2NO2 • KNO3 Which is the correct formula for the compound whose percent composition is shown? K-38.62% O- 47.51% N-13.87% • KNO2 • K4N1003 How many mL of 3.0 M HCI are needed to make 300.0 mL of 0.1 M HCI? 100.0 mL 10.0 mL • 30.0 mL .9.0 mL What group has the highest electronegativity? . Poor Metals • Moderately active non-metals • Metalloids . Highly active non-metals. A conversion factor • is equal to one. • is a ratio of equivalent measurements. • does not change the value of the measurement. all of the above. How many electrons can fit on the second energy level? • Two AH = ??? kJ • Eighteen . Eight • Thirty-Two AH-1299.5 kJ AH-393.5 kJ AH = -285.8 kJ
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